// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-delete-p
description: >
  If "deleteProperty" trap is null or undefined, [[Delete]] call is
  properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
  [[Delete]] ( P )

  [...]
  5. Let target be O.[[ProxyTarget]].
  6. Let trap be ? GetMethod(handler, "deleteProperty").
  7. If trap is undefined, then
    a. Return ? target.[[Delete]](P).
features: [Proxy, Reflect]
---*/

function Test() {
    var stringTarget = new Proxy(new String("str"), {});
    var stringProxy = new Proxy(stringTarget, {
      deleteProperty: null,
    });

    assert(!Reflect.deleteProperty(stringProxy, "length"));
    assert.throws(TypeError, function() {
      "use strict";
      delete stringProxy[0];
    });


    var regExpTarget = new Proxy(/(?:)/g, {});
    var regExpProxy = new Proxy(regExpTarget, {
      deleteProperty: null,
    });

    assert(delete regExpProxy.foo);
    assert.throws(TypeError, function() {
      "use strict";
      delete regExpProxy.lastIndex;
    });
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
